Window



l. C. DUNHAM.

WINDOW.

APPLICATION FILED 05c. 30. 1919.

Patented July 27, 192% I NV EN TOR.

WEE STATES PATENT OFFICE.-

JOSEPH G. fiUNHAM, OF OKLAHOMA, OKLAHOMA.

WINDOW.

Specification of Letters Patent.

Patented July 27,19 20.

Application filed December 30, 1919. Serial No. 348,437.

'. and sash of a window.

Figure 1 the drawings is an elevation View of a window.

Fig. 2 is an enlarged sectional view taken on the line 2--2 of Fig. 1.

Fig. 5 is a perspective view of the upper end of a metal strip.

In Fig. 2 the metal strips are shown of exaggerated thickness and their cross-section shading is done in solid black; the

cross-section of the other being nearly omitted.

Like characters of reference designate like parts in all the figures.

parts of the figure The window shown includes the usual outer casing 5, Mill) 6, partingstop 7, inner stop 8, inner casing 9, upper sash l0, and/ lower sash 11; these parts being well known in the art of building.

In carrying out the object stated, the in}- proved strip 12, best shown in F 1g. 3, is provided and interposed between-each of the sashes 10 and 11 and the jamb 6.

In cross-section this strip 12 is so shaped that its back surface along a longitudinal line rests against the surface of the jamb 6 and its edges 13 and l lrest against the sash, the strip being under elastic tension toengage said jamb and sash with an an" tight fit. l'5- The longitudinal line above referred to is, in this instance, nearer the edge 13 of the strip 12, and along said line the strip is curved or headed back toward the jamb 6 on shortradius, as at 15, so as to have a more air-tight bearing against the jamb 6 than it would otherwise have; and for the same reasonthe edges 13 and. 14- of the strip are headed towardthe sash, as at 16.

In addition to the rearwardly-extending beadla intermediate the edges of the strip 1%, a second rearwardly-extending bead 17 is formed close to and parallel with said head 15, thls bead 17 standing normally out of contact with the jamb 6 when considerablespace is left between the sash and jamb as in the case of the upper sash in Fig. 2; but when the space between the sash and jamb is reduced, as in the case o'f the s ace between the lower sash and the jamb in ig.

2, the straightening of the strip out in crosssection brings the second or added bead 17 into contact with the jamb.

This arrangement affords the strip 12 additional bearing againstlthe jamb (3 when compressed into smaller space and under increased. tension.

. In addition to the forwardly-extending head 16 at each edge of the strip '12, a second forwaidly-extending head 13 is formed close to and parallel with said bead 16 at the .edge 14, this added bead 18 standing normally out-oi contact with the sash when .the strip, 'is not m-losely compressed; but

when the spacd between the jamb and sash is reduced the straightening of the 'strip in "cross-secti(in brings the added bead 18 into' gontact with the sash. I

This c rangernent affords the strip 12 additional bearing against the sash when compressed into small spac and under increased tension and thereby prevents the beads 16 from wearing the sash too deeply.

The strip 12 may be secured in place by nails 1!) which may be driven through the bead 15 and into the jamb 6.

Having thus described the invention, I claim 1. A strip of elastic sheet material adapted to be interposed between a sash and jamb, the strip having two longitudinal beads projecting toward the jamb, the strip being so shaped in cross-section that .when cornpressed into a given space only one of the beads contacts the jamb but when compressed into smaller space the "second bead is brought into COIN t with the jamb.

2. A strip of elastic sheet material adapted to be interposed between a sash and janib, the strip being so shaped in cross-section that its back surface along a longitudinal line contacts the jamb andvits edges contact the sash, the back of the strip along said named bead contacts the jamb but "when lihe being provided with a bead which concompressed into smaller space the second ta ets the jamb, the strip being also provided bead is brought into contact with the jamb. 1!) with av second bead close to and parallel with Witness my hand this '15 dayof Decem- 5 the first-named head, the stmp being so her, 1919,

shaped in eross-sectien that when c0m- I I pressed into a given space only the first- JOSEPH G. DUNHAM. 

